Roll tailing pole piece anti-falling device and pole piece unwinding device

Abstract

The utility model relates to the technical field of battery manufacturing, and discloses a winding drum tailing pole piece anti-falling device and a pole piece unwinding device, the winding drum tailing pole piece anti-falling device comprises an unwinding mechanism, the unwinding mechanism comprises an unwinding motor, an unwinding shaft and a conveying roller, and the unwinding shaft is in transmission connection with the unwinding motor; the negative-pressure material suction mechanism comprises a negative-pressure suction nozzle and a negative-pressure machine, the negative-pressure suction nozzle is arranged on the side, close to the conveying roller, of the unwinding shaft, and the negative-pressure suction nozzle is arranged towards the pole piece; and the visual mechanism comprises a visual camera, the visual camera is arranged on the side, away from the conveying roller, of the unwinding shaft, and the visual camera is in communication connection with the unwinding motor. The visual camera can monitor the residual meter number of the pole piece tailings in real time, identify the last circle of tailing pole pieces and control the unwinding motor to stop unwinding, so that the utilization rate and the working efficiency of the pole pieces are improved; and negative pressure is generated at the negative pressure suction nozzle when the last circle is unwound, and the negative pressure can be used for adsorbing pole piece tailings in time, so that the pole pieces are prevented from falling on the ground to be polluted, and the waste of the pole pieces is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a device for preventing a pole piece from falling off a roll tail material and a pole piece unwinding device. Background Art

[0002] The explosive growth of electric vehicles in recent years has led to a proliferation of lithium-ion battery manufacturers. To survive in this competitive market, battery manufacturers are constantly improving the performance of their batteries, such as developing high-energy-density, high-rate, and fast-charging batteries. To achieve this, they are increasing product yields through strict control of production processes. Because foreign matter in battery cells plays a crucial role in their performance and safety, the requirements for controlling foreign matter in electrode materials are becoming increasingly stringent. Furthermore, controlling production costs is crucial to improving competitiveness.

[0003] Currently, when coating and rolling the unwinding electrode, the equipment is generally stopped and a new roll is replaced when there are only 20 to 30 meters left. Under normal circumstances, the operator cannot accurately predict the remaining meters of the electrode by visual inspection alone, and the machine must be slowly stopped when the last few meters are reached. If the operation is not done properly, the electrode tail will fall to the ground and be contaminated. The contaminated electrode tail cannot be used anymore and becomes waste. The existing solution is time-consuming and consumes electrodes, seriously affecting production efficiency. At the same time, when the electrode is reconnected, the waste generated by the contamination of the original electrode tail cannot be reused. This production model results in a large amount of material waste every day. Utility Model Content

[0004] The purpose of the utility model is to provide a device for preventing the pole piece of the tail material of the reel from falling, so as to solve the problems of low production efficiency and material waste of the pole piece of the unwinding tail material in the prior art; the invention also provides a pole piece unwinding device.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a device for preventing the electrode piece of the reel tail from falling off, comprising:

[0006] An unwinding mechanism, comprising an unwinding motor, an unwinding shaft and a conveying roller, wherein the unwinding shaft is in driving connection with the unwinding motor, and the unwinding shaft and the conveying roller form an unwinding path for the pole piece;

[0007] A negative pressure material suction mechanism, comprising a negative pressure suction nozzle and a negative pressure machine connected to the negative pressure suction nozzle, wherein the negative pressure suction nozzle is arranged on a side of the unwinding shaft close to the conveying roller and is arranged toward the electrode;

[0008] The visual mechanism includes a visual camera, which is arranged on the side of the unwinding shaft away from the conveying roller. The visual camera is communicatively connected to the unwinding motor, and is used to obtain an image of the unwinding shaft and transmit a control signal to the unwinding motor.

[0009] Preferably, the negative pressure material suction mechanism further comprises a negative pressure cover having a negative pressure mesh port, and the negative pressure mesh port forms the negative pressure suction nozzle.

[0010] Preferably, the negative pressure machine includes a negative pressure drive motor and a negative pressure suction pipe, and the negative pressure suction pipe is connected between the negative pressure drive motor and the negative pressure cover.

[0011] Preferably, the visual mechanism further comprises a visual bracket, the visual bracket is arranged on a side of the unwinding shaft away from the conveying roller, and the visual camera is fixedly assembled on the visual bracket.

[0012] Preferably, the visual support includes columns and cross bars, the columns are arranged in two groups in parallel and at intervals, the cross bars are connected between the two groups of columns, the columns and the cross bars form a gantry structure, and the visual camera is assembled on the cross bars.

[0013] Preferably, it further comprises a receiving tray, which is arranged at the bottom of the unwinding shaft.

[0014] Preferably, the receiving tray includes a bottom plate and a receiving plate, the receiving plate is fixedly assembled on the bottom plate, the receiving plate and the negative pressure suction nozzle are located on both sides of the electrode, and the receiving plate has a slope for supporting the electrode.

[0015] Preferably, it further comprises a base, the unwinding motor is fixedly mounted on the base, and the unwinding shaft and the conveying roller are both rotatably mounted on the base.

[0016] Preferably, the unwinding shaft is an inflatable shaft.

[0017] The utility model also provides a pole piece unwinding device, comprising the roll tail pole piece anti-dropping device described in any of the above technical solutions.

[0018] Compared with the prior art, the embodiment of the utility model, a device for preventing the tail material of the roll from falling and a device for unwinding the electrode have the following beneficial effects: a negative pressure suction nozzle and a visual camera are respectively arranged on both sides of the unwinding shaft, the visual camera can monitor the remaining meters of the electrode tail in real time, and transmit a control signal to the unwinding motor to slow down the unwinding motor to unwind, and can identify the last circle of the tail material electrode, control the unwinding motor to stop unwinding, freeing up manpower, and improving the utilization rate and work efficiency of the electrode; when unwinding the last circle, the negative pressure machine extracts gas to generate negative pressure at the negative pressure suction nozzle, and the negative pressure can be used to absorb the electrode tail in time to ensure that the electrode will not fall to the ground and cause pollution, thereby reducing electrode waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the device for preventing the pole piece from falling off the tail of the reel of the utility model;

[0020] Figure 2 yes Figure 1 Schematic diagram of the structure of the roll tail material pole piece anti-dropping device from another perspective.

[0021] In the figure, 1. unwinding mechanism, 11. unwinding motor, 12. unwinding shaft, 13. conveying roller, 2. negative pressure material suction mechanism, 21. negative pressure machine, 211. negative pressure drive motor, 212. negative pressure suction pipe, 22. negative pressure suction nozzle, 23. negative pressure cover, 3. visual mechanism, 31. visual camera, 32. visual bracket, 321. column, 322. cross bar, 4. receiving tray, 41. bottom plate, 42. receiving plate, 421. slope, 5. base. DETAILED DESCRIPTION

[0022] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] A preferred embodiment of the device for preventing the electrode piece from falling off the tail of the reel of the utility model is as follows: Figure 1 and Figure 2 As shown, the device for preventing the tail material of the reel from falling includes an unwinding mechanism 1, a negative pressure suction mechanism 2 and a visual mechanism 3. The unwinding mechanism 1 is used for unwinding the electrode, the negative pressure suction mechanism 2 is used for negative pressure adsorption of the tail material of the electrode, and the visual mechanism 3 is used for monitoring the unwinding of the electrode.

[0024] The unwinding mechanism 1 includes an unwinding motor 11, an unwinding shaft 12, and a conveyor roller 13. The unwinding shaft 12 is used to set the electrode. The unwinding motor 11 is connected to the unwinding shaft 12 for transmission. The unwinding motor 11 drives the unwinding shaft 12 to rotate to complete the electrode unwinding operation. There are multiple conveyor rollers 13, which are arranged at intervals. Each conveyor roller 13 cooperates with the unwinding shaft 12 to form an unwinding path for the electrode.

[0025] The negative pressure suction mechanism 2 includes a negative pressure suction nozzle 22 and a negative pressure machine 21. The negative pressure machine 21 is connected to the negative pressure suction nozzle 22. The negative pressure suction nozzle 22 is arranged on the side of the unwinding shaft 12 close to the conveying roller 13, that is, the negative pressure suction nozzle 22 is arranged at the downstream position of the unwinding shaft 12. The negative pressure suction nozzle 22 is set towards the electrode. When the electrode is unwound to the last circle, the negative pressure machine 21 works, and the negative pressure suction nozzle 22 directly absorbs the surface of the electrode to prevent the tail of the electrode from falling.

[0026] The visual mechanism 3 includes a visual camera 31, which is arranged on the side of the unwinding shaft 12 away from the conveying roller 13. The visual camera 31 is communicatively connected to the unwinding motor 11. The visual camera 31 is used to obtain an image of the unwinding shaft 12 and transmit a control signal to the unwinding motor 11, adjust the speed of the unwinding motor 11 or control the unwinding motor 11 to stop, thereby realizing the automation of the unwinding operation.

[0027] In this embodiment, the visual camera 31 is a high-precision linear array camera with a detection accuracy of 0.5 mm. The visual camera 31 has a field of view covering the entire unwinding shaft 12. The visual mechanism 3 is controlled by a CCD visual system and can accurately identify changes in the edge of the pole piece and the edge of the unwinding shaft 12 during the unwinding process. The alignment of the pole piece edge is ±2 mm. By identifying the changes in the edge of the pole piece and the edge of the unwinding shaft 12, the remaining number of meters of the pole piece can be predicted in combination with the time and speed of the unwinding shaft 12.

[0028] When the electrode is unwound to the point where the remaining tail is close to 5m, the visual camera 31 transmits a deceleration signal to the unwinding motor 11, and the unwinding motor 11 decelerates to 5m / min for slow unwinding; when the visual camera 31 detects the contact surface between the electrode tail and the last circle of the unwinding shaft 12, the visual camera 31 transmits a stop signal to the unwinding motor 11, and the unwinding motor 11 stops unwinding. The time it takes for the equipment to brake from 5m / min to a stationary state is extremely short and almost negligible, ensuring that the electrode will not separate from the unwinding shaft 12, thereby ensuring the electrode can be reused.

[0029] When the unwinding motor 11 stops unwinding, the negative pressure machine 21 of the negative pressure suction mechanism 2 starts working at the same time, that is, the starting signal of the negative pressure machine 21 begins at the moment when the unwinding motor 11 stops braking. The power of the negative pressure machine 21 is directly turned to the maximum, and the negative pressure machine 21 sucks air to generate negative pressure at the negative pressure suction nozzle 22, and uses the negative pressure suction nozzle 22 to directly suck the last circle of the electrode to prevent the electrode from falling.

[0030] The device for preventing the tail material of the reel from falling off is respectively provided with a negative pressure suction nozzle 22 and a visual camera 31 on both sides of the unwinding shaft 12. The visual camera 31 can monitor the remaining meters of the tail material of the electrode in real time, and transmit a control signal to the unwinding motor 11 to make the unwinding motor 11 slow down and unwind, and can identify the last circle of tail material electrode, control the unwinding motor 11 to stop unwinding, freeing up manpower and improving the utilization rate and work efficiency of the electrode; when the last circle is unwinding, the negative pressure machine 21 extracts gas to generate negative pressure at the negative pressure suction nozzle 22, and the negative pressure can be used to absorb the tail material of the electrode in time to ensure that the electrode will not fall to the ground and cause pollution, thereby reducing the waste of the electrode.

[0031] Preferably, the negative pressure material suction mechanism 2 further includes a negative pressure cover 23 , the negative pressure cover 23 has a negative pressure mesh port, and the negative pressure mesh port forms a negative pressure suction nozzle 22 .

[0032] The negative pressure mesh port at the negative pressure cover 23 of the negative pressure suction mechanism 2 forms a negative pressure suction nozzle 22. The negative pressure cover 23 has the function of equalizing pressure, so that the pressure at each position of the negative pressure mesh port is uniform, which can well absorb the electrode and prevent the electrode from falling, and also simplifies the arrangement of the negative pressure suction nozzle 22.

[0033] Preferably, the negative pressure machine 21 includes a negative pressure drive motor 211 and a negative pressure suction pipe 212 , and the negative pressure suction pipe 212 is connected between the negative pressure drive motor 211 and the negative pressure cover 23 .

[0034] The negative pressure machine 21 is formed by a negative pressure drive motor 211 and a negative pressure suction pipe 212. The negative pressure drive motor 211 uses the negative pressure suction pipe 212 to extract the air in the negative pressure cover 23. By adjusting the speed of the negative pressure drive motor 211, the power of the negative pressure suction mechanism 2 can be effectively controlled, and the adjustment is convenient.

[0035] Preferably, the vision mechanism 3 further includes a vision bracket 32 . The vision bracket 32 is provided on a side of the unwinding shaft 12 away from the conveying roller 13 . The vision camera 31 is fixedly assembled on the vision bracket 32 .

[0036] The vision bracket 32 is used to support and fix the vision camera 31. By adjusting the position and height of the vision bracket 32, the assembly position of the vision camera 31 can be adjusted to ensure that the field of view of the vision camera 31 can well cover the entire unwinding shaft 12.

[0037] Preferably, the visual support 32 includes columns 321 and cross bars 322 . The columns 321 are arranged in two groups in parallel and spaced apart. The cross bars 322 are connected between the two groups of columns 321 . The columns 321 and the cross bars 322 form a gantry structure. The visual camera 31 is assembled on the cross bars 322 .

[0038] In this embodiment, the column 321 and the cross bar 322 are in a gantry structure, which simplifies the structural form of the visual bracket 32 and can provide good support for the visual camera 31. In addition, the gantry structure also reduces the support space of the visual bracket 32, making it easier to fix it during unwinding.

[0039] Preferably, a receiving tray 4 is further included, and the receiving tray 4 is arranged at the bottom of the unwinding shaft 12.

[0040] A receiving tray 4 is provided at the bottom of the unwinding shaft 12 for receiving the electrode. Under abnormal circumstances, the electrode will fall off the unwinding shaft 12 and will not be sucked by the negative pressure suction mechanism 2. At this time, the electrode tail will fall into the receiving tray 4, preventing the electrode from falling to the ground and becoming contaminated and unusable, resulting in material waste. In this embodiment, abnormal circumstances include but are not limited to the following: 1. The visual mechanism 3 fails to effectively identify the boundary line of the last circle of the electrode, causing the electrode to detach from the unwinding shaft 12 and fall to the ground; 2. The electrode is not bonded to the unwinding shaft 12 and directly detaches due to the speed.

[0041] Preferably, the receiving tray 4 includes a bottom plate 41 and a receiving plate 42 . The receiving plate 42 is fixedly assembled on the bottom plate 41 . The receiving plate 42 and the negative pressure suction nozzle 22 are located on both sides of the electrode. The receiving plate 42 has a slope 421 for supporting the electrode.

[0042] The receiving plate 42 of the electrode disk has a slope 421. The receiving plate 42 and the negative pressure suction nozzle 22 are located on both sides of the electrode. When the electrode is separated from the unwinding shaft 12 and is not adsorbed by the negative pressure suction nozzle 22, the electrode tilts downward and falls off under the traction force of the electrode and the action of gravity. Under the support of the conveying roller 13, the electrode is in an inclined state as a whole. The slope 421 of the receiving plate 42 can increase the contact area with the electrode to avoid damage to the electrode.

[0043] Preferably, it further includes a base 5 , the unwinding motor 11 is fixedly assembled on the base 5 , and the unwinding shaft 12 and the conveying roller 13 are rotatably assembled on the base 5 .

[0044] The base 5 can provide an assembly station for the unwinding motor 11, unwinding shaft 12, conveyor roller 13 and other structures, and the receiving tray 4 is placed on the base 5. In this embodiment, the base 5 is an L-shaped structure as a whole, the receiving tray 4 is placed horizontally on the base 5, and the unwinding motor 11, unwinding shaft 12, and conveyor roller 13 are assembled on the vertical surface of the bottom plate 41.

[0045] Preferably, the unwinding shaft 12 is an inflatable shaft.

[0046] The surface of the inflatable shaft can protrude after being inflated with high pressure, and the surface part can quickly retract after being deflated, which is convenient for the quick replacement of the electrode.

[0047] The present utility model also provides a preferred embodiment of a pole piece unwinding device, including a device for preventing the pole piece of the tail material of the reel from falling off. The specific structure of the device for preventing the pole piece of the tail material of the reel from falling off is the same as the specific structure of the device for preventing the pole piece of the tail material of the reel from falling off in any of the above embodiments, and will not be repeated here.

[0048] The working process of the present invention is as follows: when unwinding the pole piece, the unwinding motor 11 drives the unwinding shaft 12 to rotate, and the unwinding shaft 12 cooperates with the conveying roller 13 to unwind the pole piece, and the visual camera 31 monitors the edge changes of the pole piece on the unwinding shaft 12 in real time, and predicts the remaining meters in combination with the unwinding time and the unwinding speed; when the remaining tail of the pole piece is close to 5m, the visual camera 31 monitors the change of the pole piece, and the unwinding motor 11 slows down to 5m / min for slow unwinding; when the visual camera 31 detects the contact surface between the pole piece tail and the last circle of the unwinding shaft 12, the unwinding motor 11 is controlled to stop unwinding. At the same time, the negative pressure drive motor 211 works synchronously to suck air at maximum power, and the negative pressure suction nozzle 22 absorbs the surface of the pole piece through negative pressure to prevent the pole piece from falling.

[0049] In summary, the embodiments of the present invention provide a device for preventing the electrode tail from falling off of a roll and a electrode unwinding device, wherein a negative pressure suction nozzle and a visual camera are respectively arranged on both sides of the unwinding shaft. The visual camera can monitor the remaining meters of the electrode tail in real time, and transmit a control signal to the unwinding motor to slow down the unwinding motor to unwind, and can identify the last circle of the electrode tail, control the unwinding motor to stop unwinding, freeing up manpower and improving the utilization rate and work efficiency of the electrode; when the last circle is unwinding, the negative pressure machine extracts gas to generate negative pressure at the negative pressure suction nozzle, and the negative pressure can be used to absorb the electrode tail in time to ensure that the electrode will not fall to the ground and cause pollution, thereby reducing electrode waste.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A device for preventing the pole piece from falling off when the end of a reel is wound, characterized in that: include: An unwinding mechanism (1), the unwinding mechanism (1) comprising an unwinding motor (11), an unwinding shaft (12) and a conveying roller (13), the unwinding shaft (12) being in transmission connection with the unwinding motor (11), the unwinding shaft (12) and the conveying roller (13) forming an unwinding path for the pole piece; A negative pressure material suction mechanism (2), the negative pressure material suction mechanism (2) comprising a negative pressure suction nozzle (22) and a negative pressure machine (21) in communication with the negative pressure suction nozzle (22), the negative pressure suction nozzle (22) being arranged on a side of the unwinding shaft (12) close to the conveying roller (13), and the negative pressure suction nozzle (22) being arranged toward the electrode; A visual mechanism (3), wherein the visual mechanism (3) includes a visual camera (31), wherein the visual camera (31) is arranged on a side of the unwinding shaft (12) away from the conveying roller (13), and wherein the visual camera (31) is communicatively connected to the unwinding motor (11), and wherein the visual camera (31) is used to acquire an image of the unwinding shaft (12) and transmit a control signal to the unwinding motor (11).

2. The device for preventing the electrode piece from dropping off when the end of the reel is produced according to claim 1, characterized in that: The negative pressure material suction mechanism (2) further comprises a negative pressure cover (23), wherein the negative pressure cover (23) has a negative pressure mesh opening, and the negative pressure mesh opening forms the negative pressure suction nozzle (22).

3. The device for preventing the electrode piece from dropping off when the end of the reel is produced according to claim 2, characterized in that: The negative pressure machine (21) comprises a negative pressure drive motor (211) and a negative pressure suction pipe (212), and the negative pressure suction pipe (212) is connected between the negative pressure drive motor (211) and the negative pressure cover (23).

4. The device for preventing the electrode piece from dropping off when the end of the reel is rolled according to any one of claims 1 to 3, characterized in that: The visual mechanism (3) further comprises a visual bracket (32), wherein the visual bracket (32) is arranged on a side of the unwinding shaft (12) away from the conveying roller (13), and the visual camera (31) is fixedly mounted on the visual bracket (32).

5. The device for preventing the electrode piece from dropping off when the end of the reel is produced according to claim 4, characterized in that: The visual support (32) includes two columns (321) and a cross bar (322), wherein the columns (321) are arranged in parallel and spaced apart in two groups, and the cross bar (322) is connected between the two groups of the columns (321). The columns (321) and the cross bar (322) form a gantry structure, and the visual camera (31) is assembled on the cross bar (322).

6. The device for preventing the electrode piece from dropping off when the end of the reel is rolled according to any one of claims 1 to 3, characterized in that: It also includes a receiving tray (4), which is arranged at the bottom of the unwinding shaft (12).

7. The device for preventing the electrode piece from dropping off when the end of the reel is produced according to claim 6, characterized in that: The receiving tray (4) comprises a bottom plate (41) and a receiving plate (42), wherein the receiving plate (42) is fixedly mounted on the bottom plate (41), the receiving plate (42) and the negative pressure suction nozzle (22) are located on both sides of the electrode, and the receiving plate (42) has a slope (421) for supporting the electrode.

8. The device for preventing the electrode piece from dropping off when the end of the reel is rolled according to any one of claims 1 to 3, characterized in that: It also includes a base (5), the unwinding motor (11) is fixedly assembled on the base (5), and the unwinding shaft (12) and the conveying roller (13) are both rotatably assembled on the base (5).

9. The device for preventing the electrode piece from dropping off when the end of the reel is rolled according to any one of claims 1 to 3, characterized in that: The unwinding shaft (12) is an inflatable shaft.

10. A pole piece unwinding device, characterized in that: The invention comprises the device for preventing the pole piece of the reel tail from falling off as described in any one of claims 1 to 9.

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